Measure turbidity in streams where a Secchi disk cannot be used. Clear polycarbonate tube (in 2 lengths) has a 4.5 cm diameter Secchi disk design on the bottom. Drain the tube with hose and finger clamp. Longer length meets requirements of GLOBE. Available in 60 cm and 120 cm.
Measure turbidity in streams where a Secchi disk cannot be used. Clear polycarbonate tube (in 2 lengths) has a 4.5 cm diameter Secchi disk design on the bottom. Drain the tube with hose and finger clamp. Longer length meets requirements of GLOBE. Available in 60 cm and 120 cm.
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